分岔

The evolvement and mechanism of border-collision bifurcations and chaos were analyzed after the collision border line was studied. Results show the limitation of duty cycle is the fundamental cause of non-smooth bifurcations.

分析边界碰撞分岔和混沌演化过程及其产生机理，推导出碰撞边界线的解析表达式，指出发生边界碰撞的根本原因在于开关变换器占空比的有界性。

An algorithm of track to track correlation based on neural network is presented to these questions of inaccurate and lost correlation resulted by intersectant or furcate conditions in complex and multi goals ' environment .

摘要针对在密集目标环境下和运动出现交叉或分岔等难于处理的情况，将导致较多的错，漏相关航迹的问题，提出一种利用神经网络进行航迹关联的方法。

An algorithm of track-to-track correlation based on neural network is presented to these questions of inaccurate and lost correlation resulted by intersectant or furcate conditions in complex and multi goals ' environment .

针对在密集目标环境下和运动出现交叉或分岔等难于处理的情况，将导致较多的错，漏相关航迹的问题，提出一种利用神经网络进行航迹关联的方法。

Two harmonically excited systems with symmetrical rigid constraints are considered.

研究了两类含对称刚性约束振动系统的周期运动和分岔。

In the other direction the windpipe extends to the interval between the lungs, and hereupon bifurcates into each of the two divisions of the lung

在其他方向上气管延伸到肺之间的空隙，并且在此分岔进入肺的两部分。

State transfer was modeled by homogeneous Markov chain ifevery traditional bifurcation region was regarded as a state.

将传统动力学每一个分岔区域看成动力系统的一个状态，建立状态转移的齐次马尔科夫链模型。

He left on his right the two narrow passages which branch out in the form of a claw under the Rue Laffitte and the Rue Saint-Georges and the long, bifurcated corridor of the Chaussee d'Antin.

他放弃右边两个象爪子一样分岔的拉菲特街和圣乔治街下的沟管和有支管的昂坦大街下的巷道。

So in the mine exploitation and laneway design, the bifurcation laneway should be avoided and the obstruction should be eliminated as possible.

因此在矿井巷道开拓设计时，应尽量避免巷道分岔，同时避免巷道内障碍物的堆积。

But in order to do this, he must have been thoroughly familiar with the enormous madrepore of the sewer in all its ramifications and in all its openings.

但是，要这样走，就必须彻底清楚这个巨大珊瑚形阴渠的所有分岔和直管。

Based on the elastic theory of large deflection and by taking into account the variation of the axial force and its effects on bending deformation of the drillstring in vertical section,the vibration of the drillstring induced by fluctuating weight-on-bit is described by a parametrically excited system.A Mathieu equation describing the system is established by Galerkin Method.By extending the solution into a Fourier series,the curves of dynamic bifurcation values and the dynamically unstable regions surrounded by the curves are presented.

基于弹性大变形理论，考虑到轴力沿钻柱轴线的变化及其对钻柱弯曲变形的影响等因素，将受自重作用的铅垂井段钻柱在波动钻压激励下的振动转化为一个参数激励系统，用Galerkin方法首次得到了描述此系统的Mathieu方程，并通过将方程的解展成富里叶级数的方法，得到了该振动系统的动力分岔值曲线及其所包围的动力不稳定区。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。